Answer:
Perpendicular to the surface of the body.
Explanation:
When a surface is submerged in a fluid the resultant pressure force on the body acts perpendicular to the surface of the body. This is because fluids cannot withstand nor exert sideways forces. One could obtain this analytically considering that the origin of this force comes from the movement of the fluid molecules.
On comparing values , we see that student which has the largest percent error is <u>A. Student 4: 9.61 m/s2
.</u>
<u>Explanation:</u>
Here, we have Four students measured the acceleration of gravity. The accepted value for their location is 9.78m/s2. Let's calculate which student’s measurement has the largest percent error :
<u>A. Student 4: 9.61 m/s2
</u>
Percentage of error =
%.
<u>B. Student 3: 9.88 m/s2
</u>
Percentage of error =
%.
<u>C. Student 2: 9.79 m/s2
</u>
Percentage of error =
% .
<u>D. Student 1: 9.78 m/s2</u>
Percentage of error =
% .
On comparing values , we see that student which has the largest percent error is <u>A. Student 4: 9.61 m/s2
.</u>
The calculation of the centripetal acceleration of an object following a circular path is based on the equation,
a = v² / r
where a is the acceleration, v is the velocity, and r is the radius.
Substituting the known values from the given above,
4.4 m/s² = (15 m/s)² / r
The value of r from the equation is 51.14 m.
Answer: 51.14 m
Answer:

Explanation: Angular velocity is the number of revolutions made per unit time.
We convert the number of revolutions to radians and the time given in seconds to minutes,
Given;

Also,
60s = 1 min
hence

We now divide the number of revolution in radians by the time in minutes.
